I hate to criticise him under these circumstances, and I'm going to leave out the more personal side of things, but: The impression I got was that he was playing up the "free will" angle to appeal to a popular audience, at the expense of the physics. Most academics with a book to sell do that to a certain extent, but I felt that he went past what's reasonable. I won't speculate as to whether that was insincerity as such or belief in his own hype.
He devoted a whole lecture to explaining his belief in free will, going in depth into the philosphical history of the concept and his personal reasons which come across as entirely genuine. He also speculates as to how he thinks the limited free will of particles could result in our free will. It's six lectures and a lot of hard work with highly respected physicists by a mathematician who's old, accomplished and distinguished.
Fair enough. I honestly find that a lot sadder than the idea that he knew what he was doing and was sexing it up a bit. Reminds me of Penrose going off the rails.